Also listed on Merck Patent GmbH, an earlier holder on the record. The recorded assignments below show how it moved.
Term ended Nov 3, 2026 · High confidence
20-year base term ended May 23, 2025
Held by Asca
Filed May 23, 2005 as application 11/134,921 · Granted Aug 24, 2010
Base term plus 529 days of patent term adjustment (USPTO delay)
Today
Term ended Nov 3, 2026
2005
2026
Clock starts
May 23, 2005
May 23, 2005
Term ended
Nov 3, 2026
Nov 3, 2026
Granted
Aug 24, 2010
Aug 24, 2010
base term
patent term adjustment
after the term ends
fee events
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
529
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
This patent's term runs 529 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. Confidence: High. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts May 23, 2005, when this application, 11/134,921, was filed | May 23, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +529 days, USPTO patent term adjustment record | Nov 3, 2026 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Nov 3, 2026 | High confidence |
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Aug 16, 2006 Reel 18134, frame 194 | Gaudiana, Russell; Montello, Alan; Montello, Edmund | Konarka Technologies, Inc. | Assignment of Assignor's Interest |
| Oct 17, 2011 Reel 27297, frame 772 | Konarka Technologies, Inc. | Massachusetts Development Finance Agency | Security Agreement |
| Oct 17, 2011 Reel 27468, frame 697 | Konarka Technologies, Inc. | Massachusetts Development Finance Agency | Amendment to Security Agreement |
| Oct 26, 2011 Reel 27465, frame 192 | Konarka Technologies, Inc. | Total Gas & Power USA (SAS) | Security Agreement |
| Jan 29, 2013 Reel 29717, frame 48 | Konarka Technologies, Inc. | Merck KGaA | Assignment of Assignor's Interest |
| Jan 29, 2013 Reel 29717, frame 65 | Merck KGaA | Merck Patent GmbH | Assignment of Assignor's Interest |
| Mar 15, 2023 Reel 62985, frame 513 | Merck Patent GmbH | Asca | Assignment of Assignor's Interest |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
What's changing
Note
The 529 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
131
later US patents cite this one
That is top 5% of utility patents granted in 2010 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.